Back to results
US 4,048,611 AGranted
Thermal switch
OwnerWalter J. Kuczynski, Robert A. Kuczynskiinventors
Life of this patent
Estimating the term…
Abstract
A snap-action thermal switch having a housing with an open hollow portion at one end with a central enlargement of the housing in the hollow portion; a central cavity in the other end of the housing extending into the central enlargement; a pair of opposed slots communicating between the hollow portions; through the enlargement into the cavity with stationary contact in the hollow portion extending through the slot into the cavity; the widest points of the internal rectangular cavity being equal to or greater than the width of the enlargement.
Claims9
A thermal switch comprising:
- a. a housing with an open hollow portion at one end,
- b. the end of the hollow portion defining a floor,
- c. an enlargement on the floor extending into the hollow portion,
- d. a cavity at the other end of the housing, extending into the enlargement,
- e. a pair of opposed slots communicating between the hollow portion of the housing, through the enlargement into the cavity,
- f. a switch means in the cavity responsive to temperature change.
3 more elements
A thermal switch comprising:
- a. a housing with an open hollow portion at one end,
- b. the end of the hollow portion defining a floor,
- c. an enlargement on the floor extending into the hollow portion.
- d. a cavity at the other end of the housing, extending into the enlargement,
- e. a pair of opposed slots communicating between the hollow portion of the housing, through the enlargement into the cavity,
- f. a pair of unitary stationary contact terminals in the hollow portion extending through the slots into the cavity,
- g. a bumper-button in the cavity,
- h. a radial flange on the bumper-button defining a seat for a movable contact-member,
- i. a bridging movable contact-member seated on the radial flange, and disposed on the stationary contacts,
- j. a generally rectangular arc suppressing bar integral with the bumper-button adjacent to the radial flange,
- k. an annular channel on the bumper-button defining a seat for a spring,
- l. a spring having an aperture seated in the annular channel,
- m. offset arms on the spring,
- n. the spring bearing on the movable contact,
- o. the offset arms engaging the end of the cavity,
- p. the spring normally urging the movable contact toward engagement with the stationary contacts,
- g. a snap-action thermostatic disc at the open end of the cavity,
- r. means to retain the snap-action thermostatic disc at the open end of the cavity,
- s. the snap-action thermostatic disc having two stabilized configurations responsive to higher or lower temperatures,
- t. the first configuration being concave opposite the end of the bumper-button to permit the bumper-button to yield to the spring, thereby engaging the movable contact to bridge and engage the stationary contacts to complete a circuit,
- u. the second configuration being convex and engaging the bumper-button and moving it to overcome the spring and to unseat the movable contact member out of engagement with the stationary contacts, to open a circuit.
18 more elements
A thermal switch comprising:
- a. a housing having an open hollow portion at one end,
- b. a floor defined in the end of the hollow portion,
- c. a generally central enlargement on the floor extending into the hollow portion,
- d. a generally central cavity at the other end of the housing has a closed end extending into the enlargement,
- e. a pair of opposed slots communicating between the hollow portion through the enlargement into the cavity,
- f. a pair of stationary contacts extending from the hollow portion of the housing through the slots into the cavity,
- g. a bumper-button in the cavity,
- h. the bumper-button having a first radial flange, defining a seat for a bridging movable contact member,
- i. an arc suppressing bar on the bumper-button,
- j. a bridging movable contact-member seated on the flange,
- k. an annular channel on the bumper-button defining a seat for a spring,
- l. a spring having a circular aperture is in seating engagement with the channel,
- m. offset arms on the spring,
- n. the spring at the aperture engaging the movable contact,
- o. the arms engaging the closed end of the cavity,
- p. the spring normally urging the movable contact toward engagement with the stationary contacts,
- q. a snap-action thermostatic disc for actuating the bumper-button at the open end of the cavity,
- r. retaining means capturing the thermostatic disc at the open end of the cavity,
- s. the thermostatic disc having two stabilized configurations responsive to higher and lower temperatures.
- t. the first configuration being concave, permitting the bumper-button to yield to the spring and to engage the movable contact to bridge the stationary contacts to complete a circuit,
- u. the pair of stationary contacts having means for attaching electric conductors thereto,
- v. the means being screws accommodated in pockets in the floor of the housing,
- w. a passage through the housing to accommodate a mounting means.
20 more elements
Dependencies are inferred from the claim text.